Tire-shoe-making machine.



7 A. mJMoN-ns. TRE sliblMAKlNG MACHINE.-

AEPLICATION YILED DEO.5, 1912.

Patented Dec. 9, 1913.

3 EHEETS-SHEET l.

C. A. BDMONDS. TIRE SHOE MAKING MACHINE.

APPLICATION FILED DEC. 5, 1912.

1,080,683, Patented Dec. 9, 1913.

8 SHEETS-SHEET 2.

G. A. EDMONDS.

TIRE SHOE MAKING MACHINE.

APPLICATION FILED DEC. 5, 1912.

1 ,O80,683, Patented Dec. 9, 1913.

3 SHEETSSHEET 3.

UNITED STATES PATENT OFFICE.

CHARLES A. EDMOND S, OF AKRON, OHIO, ASSIGNOR OF ONE-HALF TO THE SWINEHART TIRE AND RUBBER COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO;

'I'IRE-SHOE-MAKING MACHINE.

Specification of Letters Patent.

rammed D.e e. 9, 1913.

Application filed December 5, 1912. Serial No. 735,080.

Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Tire-Shoe-'Making Machines, of which the following is a specification.

--This invention relates to machines for manufacturing tire shoes or casings for double-tube pneumatic tires, and the object thereof is, broadly speaking, to provide a machine by which the fabric carcass of a tire-shoe can be rapidly and easily manufactured with any desired tension imposedupon each layer, and a uniform tens1on 1m-' posed upon all portions of each layer.

li'lore particularly, the invention consists in providing mechanism embodying means for holding a core or mandrel on which the tire-shoe and revolvingthe fabric-carrying stock-roll about the stationary core during the superimposition of the layers of fabric on the core during the building up of the carcass of the tire-shoe.

*ith the foregoing and other objects in view, the invention consists in the novel construction, combination and arrangement of partsconstit-uting the invention to be hereinafter specifically described and illustrated in the accompanying drawings which form a part hereofwherein' is shown the preferred embodiment of the invention, but it is to be understood that changes, variations and modifications can be-resorted to which come within the scope of the claims hereunto appended. I

In the drawings in which similar reference numerals indicate like'parts in the different figures, Figure 1, is a view in side 'elevation of a tire-shoe making machine embodying this invention; Fig. 2, is a side elevation lookingfrom the right of Fig. 1 with a portion of the mechanism in central ver tical section; Fig. 3, is a plan; and,Fig. 4, is a sectional view of a'portion of the meeha nism shown in Fig. 3 on line X thereof.

7 The mechanism for manufacturing a tireshoe Q-ZflbOCllES means for supporting a core during the formation of the tire-shoe thereon and also mechanism for superimposing on the core the various successive lavers of fabric which go to make up the carcass of the same.

The means employed for supporting the core embodies an upright housing consisting of side plates 1 and 2 mounted on a suitable base 3 and united through the medium of transverse members 4 and 5 which are bolted or otherWisesecured to the side plates 2 through the medium of hold-fast devices 6. Mounted on the transverse mem-,

her 4 is a bearing 7 and mounted on the transverse member 5 is a bearing 8. Mounted in these is a shaft 9 provided at one end with a chuck 10 having radially-extensible arms 11 the outer ends of which are adapted to grasp or-engage the inwardly-- extending flange 12 of a core 13 on which the tire is to be built up. The arrangement of this chuck is of ordinary construction and it is contemplated that the three radiallyextensible arms 11 may be moved outwardly and inwardly simultane'ouslyto engage in a. suitable form of groove on the inner face of the flange 12 and thereby hold the core 13 concentric with the axis of the shaftS), i

Mounted on the bearing 8 is a member 11 in which is mounted a radially-movable pin 15 adapted to engage a suitable aperture in a fixed collar 16 on the shaft 9 for holding the latter against unintentional rotation.

The mechanism for laying on repeated strips of fabric on the core 13 embodies a pair of annular members 17 and 18 each embodying an upright portion 19 consisting of a Web andstittened through the medium of ribs 20, and both are also provided with base flanges 21. These members 17 and '18 are v ring-shaped and are arranged parallel andconcentric with the axis of the shaft 9. At intervals on the outer faces of the members 17 and 18 are hollow housings-22 pivii'ided with apertures registering with suitable apertures in the membersl? and 18 to pro vide bearings for pairs of alined shortshafts 23 on which are mounted friction-reducing rollers 24.. These rollers and their inclosing housings 22 are preferably arranged at regular intervals throughout the members 17 and 18 and as shown in the drawings are arranged at the angles of an imaginary hexagon. Adapted .to-be rotatably mounted on, and supported by the rollers-24 is an-annular stock-carrier 25 provided on its periphcry with a centrally-arranged integral spurgear 26, pro3ectmg between the inner opposmg faces of the members 17 and 18. In .or-

,der to hold the annulus against lateral movement there is provided between the inner opposing faces of the members 17'and 18 and the side faces of the gear 26 a pair of wear-reducing rings 27 preferably of brass.

The mechanism for revolving the stockcarrier 25 embodies. the following mechanism: Mounted on a suitable standard 27 is a motor .29 on the armature shaft of which is a clutch 30 by which motion is transmitted to a shaft 31, and it may be stated at this point, that no particular form of clutch is shown as the form of clutch emmounted in which is a longitudinal shaft 38 parallel with the shaft 9. Mounted on the shaft 38 immediately above the shaft 31 is a worm-gear 39 adapted to mesh with the .worm 34 and be driv n thereby. The hub Of the worm-gear 39 is providediwith one member of a square-"jawed clutch 40.

Mounted on suitable brackets 41 secured,

to the inner opposing faces of the plates 1 and 2 are a pair of alined bearings 42 in which is rotatably mounted an idler shaft 43 bearing immediately belowthe shaft 9 a worm 44 arranged to mesh with a worm gear 45 loosely mounted on the shaft 38. The hub of the gear 45 is provided with 'one member of a square-jawed clutch 46.

One end of the shaft 43 is provided with a sprocketwlieel 47 to receive a sprocketchain 48 for communicating motion from the, sprocket-wheel 35 on the shaft 81. Splined on the shaft 38 between the members 40 and 16 is a member 19 of a squarejawed'clutch which embodies a grooved collar, the hubs of which are notched to engage, in alternation, in the square-jawed clutch members 40 and 46. Secured on a suitable post 50 (see Fig. 1) as a pivot, is a lever 51 the inner end of which is bifurcated to inclose'the member 49 and is pro vided with nogs 52 running in the groove in the collar 4-9,, so that when the lever 51 is shifted the clutch member 19 will alternately engage the square-jawed clutch members 40 and 46 for transmitting motion from the shaft 31 to the shaft 38 the speed of rotation of which depends upon which of the clutch members 40 or 46 is engaged thereby,

The sliaft 31 'medium of resilient element ,67

that is to say, if the .clutch member 49 is thrown into clutching relation with the clutch mcmber'40 on the gear 39, the shaft, 38 will be rotated at a certain speed and if the member 45) is thrown into clutching relation with the clutch member 46, the gear 45 and shaft 38 will be rotated at a different speed due to the communication ofmotion, through the medium of the sprocketchain 48 from the sprocket-wheel 35 to the Sprocketwvheel 47.. The shaft 38 bears on -1ts rear end a pulley 53 to receive a belt, 54 Which also runs over a pulley 55 on a shaft 56 mounted in a bearing 57 on the base plate 3 and also in bearings 58 (see Fig. 1) in the members 17 and 18. The shaft 56 bears a fixed pinion 59 positioned between the members 17 and 18 and which is arranged to intermesh with the gearteeth on the outer face of the-stock-car ricr 25. I From the foregoing it wilt be seen that the stock-carrier 25 may be revolved on the rollers 24 at varying speeds through the medium of the hereinbefore described mechanism.

- The mechanism for applying successive layers of fabric to the core 13 embodies the following mechanism, and reference is especially directed to Fig. 1. Secured to the inner face of the stock-carrier 25 is a radial bracket 60 bearing a shaft 61 parallel with the axis of revolution of the annulus,

and on which is mounted a stockr0ller 62 carrying a winding of layers of rubbercoated fabric or thread fabric, or any other suitable tire-building material alternately with which is a layer of muslin or canvas for keeping the layers from unintentionally adhermg to each other. The peculiar mechanism for holding the stock-roller or bobbin 62 in position on the shaft 61 is immaterial and no specific means are either shown or described.

medium of a hinge 63 is an arm 64 on the lower end of which is a transverse shaft 65 bearing a take-up roller 66 the object of which is to take up-the utiwound strip of muslin or canvas from the stock-roller 62 as the stock of rubberized fabric is unwound therefrom. The take-up roll 66 is held in snug engagement with the periphery of the stock on the stock-roller through the i which is suitably anchored at 68. Y

Secured to the inner face of the stockcarrier 25 is a radial arm 6!) bearing a transverse-shaft 70 on which is mounted an idler roll 71. The arm 69 also bears a projecting,

arm 72 hearing a shaft 73 on which is an idler roll 7 1. The shaft 'ZO'also bears a sprocket-wheel 75 for a purpose to be later described. I

Secured to the inner face of the stockcarrier 25 is another bracket 76 which car- Also secured to the in- 4 her face ofthe stock-carrier 25 through the ries a transverse shaft '77 on which is an idler. roll 78. The shaft 77 also bears outside of the bracket 76 a sprocket-wheel 79 to receive a sprocket chain. 80 for inducing simultaneous rotation of the two shafts and 77 with their idler rolls 71 and 78. The bracket 76 also is provided with a pair of laterally-projecting arms 81 and 82 which bear respectively transverse shafts on which are mounted rolls S3 and S1.

The operation of the foregoing mecha nism is as follows: A strip of fabric 85 rolled up with an alternate winding of a separating medium, such as muslin or canvas on thestock-roller 62, and from thence unwound for use on the core 13, and at the same time, the supply of separating substance, either muslin or fabric is wound up on the take-up roller-N36. The rubberized fabric passes from the stock-roller (32 inwardly around the face of the roll 73, and from thence, inwardly around the roll 83, and from thence, around the idler 7S, and around the roll 81, and is then applied to the outer surface of the core 13 and as the member 25 revolves in the direction of the arrow, it will be applied to the surface of the core inthe usual manner employed for building up a tire-shoe on a core or mandrel. It will be noted that the synocket-wheels and 79 are of different sizes, so that the peripheral speed of the rolls 71 and 78 is different and thereby uniform tension is imposed on the fabric during its placement on the core.

In order to properly apply the strip and roll out all bubbles and unevenness which might exist, in placing the fabric 85 on the core 13, suitable instrumcntalities are em- .ployed, the functions of which are to place the fabric evenly and smoothly on the surface of the core 13. One of these instrumentalities which I employ'for rolling the fabric 85 on the tread or outer surface of the core '13, embodies a tubular member secured to the inner face of the stock-carrier 25 and in which is a plunger 87 forced in wardly under normal condit ons through the medium of a coiled resilient element 88. .The inner end of the plunger 87 bears a roller 89 with a con -ave face the purpose of which is to roll down the strip of fabric onto the tread portion of the core 13.

In order to perform the operation of stitching. which, as is known i the art, is the ironing or rolling of the strip of fabric along the lateral faces and inner faces of the core, I employ a tubular member 90 in which is a spring 91 adapted to force inwardly toward the center of the core a plunger 92, the peration of which is similar to the operation of a piston in a cylinder. The

inner or head endof the plunger 92 bears a nivotally-mounted cross-arm to which 15 pivotally united a pair of rockingarms 94 byineans of-a resilient element 90 to force these ends apart and the stitching rollers in wardly against the side faces of the core.

It will be noted that the normal tendency of the spring 91 is to force the roller 95 inwardly toward the center of the core, and the mechanism employed for forcing'them outwardly and causing them to travel over the sn rfaceof the fabric during its placement on the core embodies the following mechanism: Secured on the plate 2 is an upright standard 97 on the upper end of which is pivoted a horizontal lever 98, to the inner end of which is pivotally united an L-shaped lever 99, the opposite end of which is bifurcated and provided with a pair of pins constituting nogs 100. Longitudinally-shiftably mounted on the shaft 9 is a grooved sleeve 101 in one of the grooves of which the nogs 100 are adapted to travel so that as r the lever 98 is shifted from left to right, and

vice versa, the collar 101 will be shifted on the shaft 9.

Fixedly mounted on the shaft 9 is a grooved collar 107 in the groove of which are secured the separable halves of a yoke or head end 102 of a fulcrum-forming arm 103 to the opposite end of which is pivoted a bellcrank lever 10.1 the inner end of which is hi furcated and provided with a pair of pins constituting nogs 105 adapted to run in one groove in the collar 101. The opposite end of the bell-crank lever-101 is connected through the medium of a link 106 with the transverse arm 93.

'the shaft 9, it will rock the bell-crank lever 104, thereby causing the plunger 92 to move radially inwardly and outwardly toward the center of the core, thereby carrying the stitching rolls 95 over the lateral faces of the fabric on the core-body.

I claim:

1. A tire-shoe-i'iniking machine comprising a normally-irrevoluble ring-core, an annulus arranged to revolve about said core in substantially the plane thereof, a stock-roller for carrying a supply of stock secured to the inner face of said annulus, means for leading the material from said stock-roller to said core, means for imposing tension on said material during its placement on said core, and a plurality of inwardly-projecting and radially-positioned.tire-sho shapingtools secured to said annulus and engaging the material on said core during the placement of said material.

2. A tire-shoe-building machine embodying a normallynon-rotatable shaft, a coreholding chuck thereon, supporting means for said shaft, an annulus revoluble about said core, means for revolving it, a stockroller for carrying a supply of tire-shoe building material on said annulus to permit the'placement of the material on said core during the'revolution of said annulus, tireshoe shaping-tools ,on said annulus and adapted to engage the tire-shoe building material during its placement on said core, a lever pivotally mounted on said frame,

means connecting said lever'witli said tireshoe shaping-tools arrangedto operate the latter inwardly and outwardly over the surface of the material on said core during the placement of the former and during the revolution of said annulus.

3. A tire-shoe building machine comprising a normally-irrevoluble ring-core, an annulus arran ed to revolve about said core in the plane 0t lts diameter, a stock roller for carrying a supply of tire-building stock carried by said annulus, and means. carried by said annulus embodying shaplng tools for placing said tire-building material on said core.

In testimony whereof I have hereunto set my hand in presence of two subscribing Wit- 

